Weft-case for loom-shuttles.



'No. 724,075. Q PATENTED MAR. 31, 1903.

' W. H. BAKER & F. E. KIP.

WEFT CASE FOR LOOM SHUTTLES.

APPLICATION FILED mu 9, 1901. RENEWED JAN. e. 1903.

no MODEL.

WITNESSES: I I v I g/iLIVENTORSL KWZ/M fEM-c: W E

BY M ATTORNEY UNITED STATES PAT NT OFFICE.

WVILLIAM H. BAKER, OF CENTRAL FALLS, RHODE ISLAND, AND FREDERIC E.

KIP, OF MONTCLAIR, NEW JERSEY.

WEFT-CASE FOR LOOM-SHUTTLES.

SPECIFICATION forming part of Letters Patent No. 724,075, dated March 31, 1903.

I Application filed May 9, 1901, Renewed January 8, 1903- Serial No. 188,318- (No model.)

To all whom it may concern:

Be it known that we, WILLIAM H. BAKER, residing at Central Falls, Providence county, Rhode Island, and FREDERIO E. KIP, residing at Montclair, Essex county, New Jersey, citizone of the United States, have jointly invented certain new and useful Improvements in Weft-Cases for Loom-Shuttles, of which the following is a specification.

This invention relates to devices commonly known as weft-cases, bobbin-boxes, &c. and which are designed to receive a bobbin, cop, or other form of weft-holder and to fit removably or displaceably in a shuttle-body. Where the Weft-holder is slipped'on a spindle in a shuttle and the weft-thread is led out through an eye in the shuttle, it is necessary in order to replenish the weft automatically to change the shuttles. This kind or form of weft or filling changing or replenishing mechanism is commonly called a shuttlechanger. In automatic weft replenishing mechanisms where the shuttle is not changed,

' but the weft-holder is'automatically'supplied to the running shuttle,a self-threading shuttle is employed. This-kind or form of these replenishing mechanisms is commonly called a bobbin-changer. In order to enable an ordinary shuttle to be employed in a bobbinchanging Weft-replenishing mechanism,it has been proposed to employ a shuttle that is not self-threading, but which is otherwise similar to the shuttle used with a bobbin-changing mechanism, and to mount removably or displaceably therein a weft-case,in which the bobbin, cop, or other weft-holder is mounted in a manner similar to that ordinarily employed for mounting a weft holder in a shuttle. Where suchaweft-case is employed, the Weft thread or yarn is threaded through an eye or hole in the weft-case and lies in an open recess cut in the side of the shuttle.

The objectionable feature of the weft-case heretofore employed was its bulk, Weight, and cost. It is Very important that the shuttle shall carry a maximum amount of weft or filling, so that it need not require replenishing frequently; and the object of the present invention is to provide a weft-case which will receive a bobbin or weft-holder carrying the maximum amount of weft'or filling and which will be light, strong, and inexpensively constructed.

In the accompanying drawings, which serve to illustrate an embodiment of the invention, Figure 1 is a plan View of the shuttle and the Weft-case mounted therein, and Fig. 2 is a sectional side elevation of the same. Fig. 3 is a view similar to Fig. 2, showing the weftcase in elevation and reversed as to its bars with respect to the position seen in Figs. 1 and 2. Figs. Land 5 are cross-sections taken, respectively, at 00 and m in Fig. 1. a cross-section taken at in Fig. 3, and Fig. 7 is a section through the head 2of the weftcase. Fig. Sis a cross-section showing the bars of the weft-case at the side.

A represents a shuttle-body provided with a pair of spring-jaws B at one end and a pair of spring-jaws O at the other end. This shuttle-body, as here shown, is open through from There is no specially novel feature about this shuttle-body, and itis only shown herein for purposes of illustration as a type of shuttlebody adapted to be employed with our weftcase, which is herein shown as mounted in the shuttle-body. i

The weft-case comprises two heads or end pieces connected by two stiff bars so placed as not to interfere with the weft on a full bobbin or cop.

1 designates the principal end piece, 2 the other end piece, and 3 3 the bars connecting said end pieces. The head 1 has on it two rings 4, which are adapted to engage upright cross-grooves in the fac'es'of the springjaws B of the shuttle, and the head 2 has a stem 5, which is somewhat diamond-shaped in cross-section, adapted to be clamped between the fluted spring-jaws, O in the shuttlebody. In the head 1 is hinged the spindle 6,

Fig. 6 is top to bottom and has at one side a cut-down .or way at D for the thread from the bobbin.

which carries the bobbin or other weft-holder I 7. The bobbin is prevented from slipping on the spindle by means of a cross bar or red 8 in the bars 3 and adapted to engage a groove 9 in the head of the bobbin.

10 is the spindle-spring, mounted in the head 1, and 11 is a detent or stop in said head to prevent the spindle from being opened out too far. In the head 2 is the eye 12, through which the thread or yarn 13 passes. The bars 3, as seen in Figs. and 5, are set out laterally from the spindle far enough to permit a bobbin with the maximum quantity of weft or filling thereon to be placed on the spindle. It will be noted also by inspection of these figures that the bars are not situated in the same horizontal plane with the spindle 6, but above or below that plane-and about fortylive degrees therefrom, so that the yarn on the bobbin or cop may extend out laterally, so as to occupy all the practicable space between the spindle and the sides of the shuttie-body. This is very important, especially in the class of looms where slender shuttles must be employed.

In Figs. 3 and 6 the weft-case is represented as so inserted in the shuttle-body that the bars 3 are uppermost, and this is perhaps the preferable way of placing it where the case is to be driven out by another weft-case entering the shuttle from above; but our in vention is not in any way restricted to the placing of the ease in the shuttle, whether the bars are above or below or in any other position, so long as they are not in the same horizontal plane with the spindle nor in a vertical plane passing through the spindle. In Fig. 8, for example, the bars 3 are represented as placed at the side. Obviously, also,

the Weft-case might have a stem or journal 5 at both ends, the shuttle-body in that case being provided with jaws O at both ends, or any one of the several devices for mounting a weft-case displaceably in the shuttle-body shown in our United States Patents No. 655,645, of August 7, 1900; No. 633,94at, of September 26, 1899; No. 636,707, of Novemher 7, 1899, and No. 671,202, of April 2,1901, may be employed.

Preferably in order to combine strength and lateral rigidity with a minimum cross section we prefer to make the bars 3 triangular in cross-section, with the inner face concave where it fits up to the filling on the bobbin, and to form the heads or end pieces 1 and 2 integrally with the bars.

The terms horizontal and vertical as herein employed in describing the location of the bars 3 refer to the position of the weftcase when in the shuttle and the latter in play in an ordinary loom. The space within the shuttle-body is substantially rectangular in cross-section, and the mass of weft or filling is cylindrical. Hence there are four triangular spaces, which may be called spandrel-spaces, left above and below in the cavity of the shuttle-body, and the bars 8 are spaced and located so as to occupy two of these spaces and permit the mass of weft to project out laterally between them, and if a circle be drawn from the axis of the case through the bars they will subtend an angle of approximately ninety degrees and will be forty-five degrees from horizontal and vertical planes passing through the axis of the case, intersecting at said axis. Where the shuttle is turned on its side or is open through laterally, (as in our United States Patent No. 655,648, of August 7, 1900, for example,) the weft-case would be turned also, as will be readily understood.

The principal objection up to the present time in the use of weft-cases in weft-replenishing mechanisms has been the amount of space they have occupied in the shuttle. Our construction occupies no yarn-space in the shuttle, and consequently allows the shuttle to carry the maximum amount of filling or weft.

Preferably two relatively slender but rigid bars, rods, or connecting means are employed for tying together the end pieces of the case; but obviously one such connecting means would serve if made stiff enough, said bar or rod being located, of course, so as to occupy space in the cavity of the shuttle which is not occupied by the weft or filling of an ordinary full bobbin or cop.

Being the first, as we believe, to invent a weft-case for a shuttle having the connecting means between its end pieces located as described, we claim this feature broadly and do not limit ourselves to any specific construction, as this latter may be varied without materially departing from our invention.

It may be stated here that the diamondshaped cross-section of the stem 5 puts the thread-aperture in the head 2 in proper relation with the cut or way in the side of the shuttle.

Having thus described our invention, we claim- 1. A weft-ease for a loom consisting of two end pieces, one of which has in it the eye 12 for the Weft-thread, a spindle 6, hinged in the other end piece, said end pieces being provided with means for engaging securing de vices in the shuttle-body,and two bars 3 rigidly connecting said end pieces, said bars being so located as to occupy spandrel-spaces in the cavity of the shuttle-body,sulostan tially as and for the purpose set forth.

2. A weft-case for a loom consisting of two end pieces connected onlyby two' rigid bars 3, said bars being spaced substantially ninety degrees apart in a circle described from the axis of the weft-case as a center, and located about forty-five degrees from horizontal and vertical planes which intersect in the axis of the said case, substantially as and for the purpose set forth.

too

3. The combination with a shntt1e-b0dy,of our names, this 1st day of May, 1901, in the aweft-case consisting of end pieces which are presence of two subscribing Witnesses. tied rigidly together by relatively slenderconnecting means located in the cavity of the 5 shuttle-body exterior to the space occupied by the full weft-holder, substantially as set Witnesses: forth. PETER A. Ross,

In witness whereof we have hereunto signed 1 FRANS. D. DIMAN. 

